Use a fast spin speed to extract as much water as possible from your clothes. This will reduce the amount of time your clothes have to spend in the dryer.
Using a dryer that senses when your clothes are dry will save every and extend the life of your clothes. This type of dryer can save 10 - 15% of the energy needed to dry clothes. Also make sure the dryer is vented to the outside and not under the floor or in the attic.
Make sure your dryer vent seals tightly when the dryer is not in use. If the flap stays open, cold air from the outside comes into your home through the dryer.
Read your labels. Hot water isn't always your best washing option. Many fabrics do best in cold water. And, you can always rinse in cold water, even if you wash with hot.
What's the harm with a little lint? How about the risk of fire, not to mention reduced dryer performance? Clean the lint filter after every load for optimum drying conditions.
Fill it to the rim. If you're only washing a small load, lower the water level in your machine. This is good water conservation and particularly important in areas affected by drought.
So, should your clothes be completely dry and toasty warm? Neither. It's actually better for your clothes to be hung up slightly damp.
Stuff those wet clothes into the dryer. But only if you want decreased efficiency, more wrinkles, and a longer drying time. Air should be able to circulate freely around your clothes while drying.